rnargi

Hello all,

Can someone with a little more knowledge than me take a look at these codes and let me know if something is wrong? 2002 CLK 3230 coupe w/ 135K miles. EC button works fine, clutch and compressor seem fine, blower controls are fine, but all I get is slightly cool air. Not cold, but you can tell it's cooler than with the EC button engaged. It does NOT appear to be a freon issue.

1 - 119
2 - 104
3 - 97
4 - 98
5 - 94
6 - 194
7 - 12
8 - 116
9 - 3
10 - 4.5
20 - 0
21 - 6
22 - 0
23 - 0
24 - 14.0
40 - 8
41 - 5
42 - 232
43 - 14

Any help is greatly appreciated!

V/r,

Rob

slobodan

Not sure what's going on with your system but here is a link to Marcus's webisite that has some info on the the subject. Hope it helps good luck...

http://www.marcusfitzhugh.com/CLK/DIY/acdiag.html

rnargi

Thanks for the link, it appears all is normal...which is why I'm flummoxed. If anyone else has an idea, I'd sure like to hear it. I also have no error codes.

falls profet

You may still be a little low on R34. My codes came out good and I was low; had the same issues as you do.

Also, you don't want to use the EC button when using the AC. The EC button stands for "economical" and CUTS your AC compressor off. It's good to use for the heater.

MarcusF

The heater cores are almost 100 degrees. Mine are never that hot with the AC on. My first guess would be the duovalve.

luckyjimbo1

When did you last have your air con re-charged, if the gas has escaped everything will appear to work fine, but cold air will not come out,
hope this helps
Jim

rnargi

Thanks Jim, I've figured the same...there is a temperature difference that is enough to indicate the system is operating correctly so I'm going to get it recharged. As for the EC button, I know what it's used for and I was trying to say that I know it was not engaged and/or stuck. I appreciate your response.

Marcus: That is definitely something I've considered. I plan to clean it tonight and see if that helps at all before recharging. Thank you as well for the response.

rnargi

Thanks again everyone, it indeed turned out to need a freon charge. I held my breath because the numbers looked good, but it's blowing cold. 126 bucks for a recharge is freakin' ridiculous, but what can I do?

I appreciate the responses, guys, and hope I can help you in some way in the future.

Rob

luckyjimbo1

Cool !